Control Area Imbalance

The Control Area Imbalance is the surplus or deficit of electrical energy in the APG control area. It equals the algebraic sum of all balance groups deviations (balancing energy). At the same time the control area imbalance is calculated from the algebraic sum of the following components:

Automatic Frequency Restoration Reserve

Manual Frequency Restoration Reserve

Unintended exchange with the Continental European synchronous network

The average quarter-hour values of the control area imbalance and the requested Manual Frequency Restoration Reserve in MW are usually published shortly after the end of each quarter of an hour. The illustrated data is based on measured data and is not as accurate as the measurements that are used for the settlement.